This code is applicable to power supply design for instrument and control system in the construction and extension of petrochemical industry enterprises. Reconstruction of equipment may comply with this code.
This code is not applicable to power supply design for instrument workshop (workshop section).
When implementing, this code shall comply with requirements for current relevant standard specification.
Contents
Foreword
1 Scope
2 Normative references
3 Terminologies and definitions
3.1 Instrument power supply
3.2 Uninterrupted power supply (UPS)
3.3 General power supply (GPS)
3.4 Power capacity
3.5 Momentary power failure
3.6 Momentary voltage drop
3.7 Power distributing cabinet (box)
3.8 Power-on surge condition
4 Instrument supply district and loading grade
4.1 Supply district
4.2 Loading grade
5 Instrument power supply quality and supply unit
5.1 Power quality
5.2 AC UPS equipment (UPS)
5.3 Regulated power supply and DC UPS equipment
6 Distribution of instrument power supply
6.1 General requirements for power
6.2 GPS
6.3 UPS
7 Design for instrument power supply system
7.1 Design discipline for power supply system
7.2 Power supply of electronic simulation instrumental system
7.3 Power supply of DCS, PLC, SIS and computer system
8 Selection for power supply equipments and power system wiring
8.1 General principles of selection for power supply equipment
8.2 Selection for power supply equipment
8.3 Power system wiring
References
Explanation of words in this standard
